Intermediate – AdvancedMeghalaya Leopard Snakehead
Channa paradalis
- Adult size
- ≤ 15 cm (≤ 5.9 in)
- Aquarium size
- 400 L or larger / ≥ 120 cm (≥ 47.2 in) minimum length
- Temperament
- Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 20–28 °C
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Intermediate – Advanced
IntermediateMelanzona Guppy
Poecilia parae
- Adult size
- ≤ 5 cm (≤ 2 in)
- Aquarium size
- 54 L or larger / ≥ 60 cm (≥ 23.6 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–27 °C
Beginner – IntermediateMelon Barb
Haludaria fasciata
- Adult size
- ≤ 6 cm (≤ 2.4 in)
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 22–26 °C
Beginner – IntermediateMendezi Dwarf Cichlid
Apistogramma mendezi
- Adult size
- ≤ 7 cm (≤ 2.8 in)
- Aquarium size
- 90 L or larger / ≥ 100 cm (≥ 39.4 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 23–29 °C
BeginnerMerry Widow Livebearer
Phallichthys amates
- Adult size
- ≤ 7 cm (≤ 2.8 in)
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Temp
- 23–26 °C
Beginner – IntermediateMexican Tetra
Astyanax mexicanus
- Adult size
- ≤ 12 cm (≤ 4.7 in)
- Aquarium size
- 75 L or larger / ≥ 90 cm (≥ 35.4 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 20–25 °C
Beginner – IntermediateMimicry Otocinclus
Otocinclus mimulus
- Adult size
- ≤ 4.5 cm (≤ 1.8 in)
- Aquarium size
- 112 L or larger / ≥ 80 cm (≥ 31.5 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 22–26 °C
Beginner – IntermediateMini Rosy Tetra
Hyphessobrycon dorsalis
- Adult size
- ≤ 3 cm (≤ 1.2 in)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–28 °C
Beginner – IntermediateMiniature Pencilfish
Nannostomus anduzei
- Adult size
- ≤ 2 cm (≤ 0.8 in)
- Aquarium size
- 41 L or larger / ≥ 45 cm (≥ 17.7 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–28 °C
IntermediateMirabilis Eartheater
Geophagus mirabilis
- Adult size
- ≤ 20 cm (≤ 7.9 in)
- Aquarium size
- 300 L or larger / ≥ 150 cm (≥ 59.1 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 22–30 °C
Beginner – IntermediateMolly
Poecilia latipinna
- Adult size
- ≤ 12 cm (≤ 4.7 in)
- Aquarium size
- 200 L or larger
- Temperament
- Peaceful
- Temp
- 22–26 °C
Beginner – IntermediateMonica’s Tetra
Moenkhausia monicae
- Adult size
- ≤ 5 cm (≤ 2 in)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–26 °C
Beginner – IntermediateMonkey Goby
Neogobius fluviatilis
- Adult size
- ≤ 20 cm (≤ 7.9 in)
- Aquarium size
- 76 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 4–20 °C
Beginner – IntermediateMontags Tetra
Hyphessobrycon montagi
- Adult size
- ≤ 3 cm (≤ 1.2 in)
- Aquarium size
- 76 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–27 °C
Beginner – IntermediateMoonlight Gourami
Trichopodus microlepis
- Adult size
- ≤ 15 cm (≤ 5.9 in)
- Aquarium size
- 150 L or larger / ≥ 120 cm (≥ 47.2 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–30 °C
IntermediateMorse Knifefish
Gymnorhamphichthys hypostomus
- Adult size
- ≤ 21.5 cm (≤ 8.5 in)
- Aquarium size
- 200 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 25–28 °C
Intermediate – AdvancedMotoro Stingray
Potamotrygon motoro
- Adult size
- ≤ 90 cm (≤ 35.4 in)
- Aquarium size
- 1700 L or larger / ≥ 240 cm (≥ 94.5 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 24–26 °C
Beginner – IntermediateMottled Ctenopoma
Ctenopoma weeksii
- Adult size
- ≤ 12 cm (≤ 4.7 in)
- Aquarium size
- 100 L or larger / ≥ 75 cm (≥ 29.5 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 23–27 °C
Beginner – IntermediateMountain Redbelly Dace
Chrosomus oreas
- Adult size
- ≤ 7 cm (≤ 2.8 in)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 15–25 °C
IntermediateMousetail Knifefish
Gymnorhamphichthys rondoni
- Adult size
- ≤ 15 cm (≤ 5.9 in)
- Aquarium size
- 200 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 25–28 °C
BeginnerMoustached Danio
Danio dangila
- Adult size
- ≤ 12 cm (≤ 4.7 in)
- Aquarium size
- 243 L or larger / ≥ 120 cm (≥ 47.2 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 16–24 °C
Beginner – IntermediateMurray River Rainbowfish
Melanotaenia fluviatilis
- Adult size
- ≤ 10 cm (≤ 3.9 in)
- Aquarium size
- 180 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 20–25 °C
Beginner – IntermediateMyer’s Hillstream Loach
Pseudogastromyzon myersi
- Adult size
- ≤ 6 cm (≤ 2.4 in)
- Aquarium size
- 60 L or larger / ≥ 80 cm (≥ 31.5 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 20–24 °C
Beginner – IntermediateNapo Corydoras
Corydoras napoensis
- Adult size
- ≤ 5 cm (≤ 2 in)
- Aquarium size
- 60 L or larger / ≥ 60 cm (≥ 23.6 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–26 °C